Lock



Apr. 3,1923.

L. FRIEDMAN LOCK Filed Aug. 27, 1921 Patented Apr. 3, 19235.`

LOUIS FRIEDMAN, or NEW YORK, N, Y. y'

LOCK."

Application filed August 27, 1921. SerialpN'o. 495,920.

To al?, whom it may concern Be it known that I Louis FRIEDMAN, a citizen of the United tates, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have inventedr a new and Improved Lock, of which the following is a full, clear, and exact description.

The present invention relates to new and useful improvements in lock structures, and

it pertains more particularly to a lock especially adapted for use iny connection with doors and the like.

It is one of the primary objects of the invention to provide a new and improved lock mechanism of such a structure as to prevent a forcing 4open of the door by springing the same relative tothe jamb commonlyy known as jimmying It is a further object of the invention to provide a new and novel combined manual and lkey-operated means for releasing the lock.

It is a further object of the invention to provide a lock which will automatically snap to locking position upon closing of the door.

Itis a further object of the invention to provide a plurality of sliding latches adapt- -ed for interengagement with rigid dogs to eEect a locking action. l i

It is a still further object of the invention to provide new and improved means for imparting parallel motion to the sliding latches upon releasing the locking mechanism.v

With the above and' other objects in view, reference is had to the accompanying drawings, in which- Figure 1 is a vertical sectional view of a lock vconstructed in accordance with the present invention; l

Fig. 2 is a horizontal sectional view thereof taken at right angles to Fig. '1;

on the line 3-3 of Fig. l; l Fig. 4 is a similar view taken on the line 4-4 of Fig. l;

Fig. 5 is a view similar toFig. 4 showing lthe position of the several elements of the lock during the operation of the sliding latches by the rigid dogs; j j

Fig. 6 is a detail vperspective view of one of the elements employed to impart paralle motion to the latch members.

Y ture Fig. 3 is a vertical sectional view takenV Referring more' tparticularly to the Adravvf. ings, the reference character 10 designates the jamb, and 11l designates the door. The.:` jamb is provided with a face or finishing plate 12, secured thereto by screws ori-the v-25 like 13, and rigidly. carried bysaid'iinishll ing plate 12 arerigid dogs 14fandw15 -arranged inspaced relation one to theother. These -rigiddogs 14 and 15 .are more clearly shown in Figs. 4.and 5, andthe upper dog"A 14 has an arrow-like'head 16, which struci Lprovides two oppositely-disposed l shoulders 17. The lower dog 15 is provided with one shoulder-18 and the dog l'isso positioned with respect to the yinishingaplatel 12.as to have itsshoulder 1.8 positioned. ownwardly o-r upon the 'lower side of vrllhe reference character 20..designatesaA housing and .said housing has 'a removable rear plate 21 secured 'to the housing proper` by means of suitable fasteningsin the'formf f of screws or bolts 22. This housing is :`idapt ed to be secured to the door 11 by screws'l or 'the like 23, which pass preferably entirely-8oi throughsaid housing, as'more cle'arlj7 sho-wn in Fig. 2. Extending transversely'. of the..- housing on the interior thereof are guides 24, the preferred form of arrangement be`+=V ingone' of said guides adjacent each end of the housing 20. Slidably mounted upon'the guide 24, is a latch 25, Said latch 25 being ar,- ranged inthe lower portion of thevhousing."

20 and having yan upstandingfsection or 1 shoulder 26. Mounted above the sliding latch`2'5 are two sliding latches 27 and 28. The sliding latch25 is notched as at 29 to engagethe rachet lug 15 in a manner to be hereinafter more specifically described and the sliding latches 2( and 28 are notchedzevl as at 30and 31, respectivelyto engage theV opposite sides of the upper or double rigid Carried by each of the guides 24 and inl* terposed between the lower sliding latch 25v 100 and the bottom wall of the housing 20, is'

a coil spring 32, andv interposed between the upper face 'of the upper sliding latchY 27 and the upper wall ofthe housing and surrounding the upper end of each ofthe guides 24, is a coil spring 33. `The coilv springs 32 tend to force the lower slidingy latch 25 upwardlya sufficient distance for` its enlargedpo-rtion 26 to engage-the lower edge ofthe sliding latch 28, andthe coill 110,r

15. character 39 to receive said cani.

springs 38 tend to force the upper sliding latch 27 downwardly until it enga-ges the lower sliding latch 28.

Mounted in the front wallof the housing in such a manner as to be freely rotatable therein, is an operating ,knob 85, and said operating knoib is provided with an inwardly projecting squared shaft 36. Mounted upony the squared sha-ft 36 upon the interior of the lock housing, is a Gam member 37, and said cani member 87 is adapted to occupy a position between the upper sliding latches 27 and 28, said latches being out out as indicated by the reference The reference character 37 designates a cam meinber similar tothe cam member 87 and will be hereinafter more full-y referred to.

Bythisconstruction it is apparent that as 2llfthe operating knob 85 is rotated the cam member 37 will likewise be rotated between the sliding Vlatch members 27 and 28, and will.l tend to spread them against the action of. the springs .33y in one direction and the spnings32 in the other direction in a manner to behereinafter more fully described. The cam. member 37 has an extension 89, and said extension 89 projects into a look mechanism 40 of any desired, key-operated type.

The reference character 42 designates a lever of which there are two, and each of said levers has a. circular opening 43 adapted to receive the squared shaft 86. Each of these levers is provided upon one end with :a right-.angular portion 44, and upon its other end with a verticalextension 45 terminating in a1 right-angular extension 46. '.llhesey levers 42 are positioned to the front ofthesliding latches and the right-angular extension 46 ofy oneof the levers engages the upper faceof the upper sliding latch 27, while the right-angular extension 46 of the otherl lever engages the lower face of the sliding latch 28. The right-angular eXtension. 44 of thatv lever whose right-angular eX- tension 46 engages the upper edge of the sliding latch 27, engages the upper face of the sliding latchv 28, and the right-.angular extensionA 44 of that lever 42 whose rightf angular extension 46 engages the lower edge of the sliding latch. 28, engages the under edgeofthe sliding latch member 27. By this construction it is apparent that as the squared shaft 36 yis rotated by means of the operating knob 35. the two latch members 27' and 28 will be spread and their movements will be parallel to each other since as the upper sliding latch member 27 is lifted by means of the canrmember 37, it exerts an upward force on the right-angular extension 46 which engages its upper face, and the opposits` end of the lever which carries the right-angular extension 46 will engage the lower. sliding latch member 28 and force it downwardly. This action also takes place through the medium of the other lever 42 in the following manner: As the lower sliding latch member 28 is forced downwardly, the opposite end of the lever 42 whose rightangular portion 4.6 engages the under face of the sliding latch 28, will exert an upward force upon the uppei' latch member 27, thus causing the two sliding latch members 27 and 28 to move in parallelism to each other.

By reason of the enlarged portion 26 of the sliding latch member 25 engaging the lower edge of the sliding latch member 28, it will be obvious that upon operation of the cam member 87. and when the lower latch member 28 depressed, the sliding latchy member will likewise be depressed against the action of the coil springs 82.

The operation of the device is as follows:

Assuming that the door ll is in open position, upon closing said door, the rigid dogs 14 and l5 will enter openings 50 and 51 respectively in the lock housing, and the upper dog 14 owing to its arrowhead construction will spread the sliding latch members 27 and 28 and pass betweenthem, as shown in Fig. 5. Simultaneously with this operation, the rigid dog l5 engages the lower sliding latch member 25 and force the same downwardly against the action ofthe coil springs 32.v As the door movesto completely closed position, the sliding latch members under the influence of the springs 32 and '3B will engage their respective shoulders of the rigid dogs 14 and l5, and will maintain the door in locked and closed position.

W hen it is desired to open the door from the inside, the operating member 35 is rotated by hand and the cam member 37 serves to spread the sliding latch members 27 and. 28 to a position where they will clear the shoulders 17 and the dog 14. Owing tothe. engagement of the lower sliding latch member 28 with the enlarged portion 26 of the sliding latch member 25, the slidingv latch member 25 upon movement of the sliding latch member 28 will be moved to a position where it will disencage the shoulder 18 of the rigid dog 15.

This same operation may be carried out from the outside of, a door by insertion of a key in the lock 40 in the ordinary manner.v

l claim:

14A lock comprising a housing, a plurality of sliding latches in said housing,.a` plu.- rality of parallel rigid dogs, said dogs being adapted to pass between the sliding latches, and one of said' dogs beine, engaged on opposite sides by said sliding latches, theother dog being engaged on one side by one of said sliding latches, vand resilient means fon maintaining said sliding latches and said dogs in engagement with one another.

2. A. lock comprisinga housing, a plurality of parallel sliding latches mounted; in the housing, a plurality of rigid dogs ex,-

IQO

ing parallel movement to the sliding latches upon operation of the spreading means.

3. A lock comprising a housing, a plurality of parallel sliding latches mounted in said housing, a plurality of rigid dogs adapted to enter said housing and have in-v terengagement With said sliding latches, shoulders carried by said dogs adapted for engagement with said sliding latches to prevent relative movement of the dogs and housing, and means for operating said sliding latches to disengage them from the dogs to permit of relative movement between the dogs and the housing, and a rocking lever operated by the latch operating means and engaging said parallel latches to allel movement thereto.

4. A lock comprising a housing, transversely extending guide yrods mounted in said housing, a plurality of sliding latches mounted on said guide rods, tWo of said latches being arranged to constitute a pair and one latch separate from said pair, and means for spreading the latches of said pair and said single latch simultaneously.

5. In a lock, a housing, aplurality of sliding latches, said latches being arranged to constitute a pair and a single latch spaced With respect thereto, means for spreading the pair of latches and vsimultaneously operating the third latch, and meansv for imparting a parallel movement to the latches constituting the pair, said means comprising a plurality'oll leversinterposed with regive parspect to the latches constituting the pairl and engaving the op osite ends thereof.

t Lduis FRIEDMAN. 

